问题描述：
12.—I saw David in the supermarket this morning.
—Really?He _____ around here for a long time.
A.won’t be seen \x05B.wasn’t seen
C.hasn’t been seen\x05\x05D.hadn’t been seen
这个怎么选,为什么
—Really?He _____ around here for a long time.
A.won’t be seen \x05B.wasn’t seen
C.hasn’t been seen\x05\x05D.hadn’t been seen
这个怎么选,为什么
问题解答：
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